RT Journal Article
T1 Tilt observations in the normal mode frequency band at the Geodynamic Observatory Cueva de los Verdes, Lanzarote
A1 Kalinina, A.V.
A1 Volkov, VA
A1 Gorbatikov, AV
A1 Arnoso, J.
A1 Vieira, R.
A1 Benavent Merchán, María Teresa
AB We have conducted observations with the aid of a seismo-tiltmeter station, which is basedon the Ostrovsky pendulum and installed at the Geodynamic Observatory Cueva de los Verdes atLanzarote Island since 1995. In this station the signal is separated into two frequency bands – tidal tilts(from 0 to 5 mHz) and ground oscillations in the frequency range of free Earth’s normal modes (from 0.2to 5 mHz). The later band, called accelerometer channel, has additional amplification. We analyzed thebackground records in the frequency range of Earth’s free oscillations from August 2000 to September2001, as well as, Earth’s normal modes after strong earthquakes. We found several distinctive persistentpeaks in the spectra of background oscillations. Both amplitudes of distinguished peaks and noises haveseasonal variations. We found that spectra of background oscillations are different in the frequencyinterval between 1.4 and 2.5 mHz for North- South and East-West components.
PB Birkhauser Verlag
SN 0033-4553
YR 2004
FD 2004
LK https://hdl.handle.net/20.500.14352/49827
UL https://hdl.handle.net/20.500.14352/49827
LA eng
NO International Complutense Seminar on Geodetic and Geophysical Effects Associated with Seismic and Volcanic Hazards, Oct 08-11, 2001, Madrid, Spain
DS Docta Complutense
RD 13 abr 2025